50HG014-028

Single Package Rooftop Units

Electric Cooling with Electric Heat Option

Installation Instructions

CONTENTS

Page

SAFETY CONSIDERATIONS

. . . . . . . . . . . . . . . . . . . . . . 1

INSTALLATION

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23

Step 1 — Provide Unit Support

. . . . . . . . . . . . . . . . . . . 1

• ROOF CURB

• ALTERNATE UNIT SUPPORT

Step 2 — Remove Shipping Rails

. . . . . . . . . . . . . . . . 3

Step 3 — Rig and Place Unit

. . . . . . . . . . . . . . . . . . . . . 3

• POSITIONING

• ROOF MOUNT

• INSTALLATION ONTO CURB

Step 4 — Field Fabricate Ductwork

. . . . . . . . . . . . . . . 8

Step 5 — Make Unit Duct Connections

. . . . . . . . . . . 8

Step 6 — Trap Condensate Drain

. . . . . . . . . . . . . . . . . 9

Step 7 — Make Electrical Connections

. . . . . . . . . . . 9

• FIELD POWER SUPPLY

• FIELD CONTROL WIRING

Step 8 — Install Outdoor-Air Hood

. . . . . . . . . . . . . . 20

Step 9 — Position Optional Power Exhaust or Barometric Relief Damper Hood

. . . . . . . . . . . . 22

Step 10 — Non-Fused Disconnect

. . . . . . . . . . . . . . . 22

Step 11 — Install All Accessories

. . . . . . . . . . . . . . . 23

Follow all safety codes. Wear safety glasses and work gloves. Use quenching cloth for unbrazing operations. Have fire extinguishers available for all brazing operations.

Before performing service or maintenance operations on unit, turn off main power switch to unit. Electrical shock could cause personal injury.

IMPORTANT: Units have high ambient operating limits. If limits are exceeded, the units will automatically lock the compressor out of operation. Manual reset will be required to restart the compressor.

INSTALLATION

Step 1 — Provide Unit Support

ROOF CURB — Assemble or install accessory roof curb in accordance with instructions shipped with this accessory. See

Fig. 1. Install insulation, cant strips, roofing, and counter flashing as shown. Ductwork can be installed to roof curb before unit is set in place. Curb must be level. This is necessary to permit unit drain to function properly. Unit leveling tolerance is

±

1

/

16

in. per linear ft in any direction. Refer to Accessory

Roof Curb Installation Instructions for additional information as required. When accessory roof curb is used, unit may be installed on class A, B, or C roof covering material.

SAFETY CONSIDERATIONS

Installation and servicing of air-conditioning equipment can be hazardous due to system pressure and electrical components. Only trained and qualified service personnel should install, repair, or service air-conditioning equipment.

Untrained personnel can perform the basic maintenance functions of replacing filters. All other operations should be performed by trained service personnel. When working on air-conditioning equipment, observe precautions in the literature, tags and labels attached to the unit, and other safety precautions that may apply.

IMPORTANT: The gasketing of the unit to the roof curb is critical for a watertight seal. Install gasket with the roof curb as shown in Fig. 1. Improperly applied gasket can also result in air leaks and poor unit performance.

ALTERNATE UNIT SUPPORT — When a curb cannot be used, install unit on a noncombustible surface. Support unit with sleepers, using unit curb support area. If sleepers cannot be used, support long sides of unit with a minimum of 3 equally spaced 4-in. x 4-in. pads on each side.

Book 1

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

4

PC 111 Catalog No. 535-00092 Printed in U.S.A.

Form 50HG-7SI Pg 1 11-03 Replaces: 50HG-3SI

Tab 1b 6b

Fig. 1 — Roof Curb Details

2

Step 2 — Remove Shipping Rails —

Remove shipping rails prior to lowering unit onto roof curb. See Fig. 2. The rails are attached to the unit at both the return end and condenser end. Remove the screws from both ends of each rail. Be careful not to drop the rails onto any surface that could be damaged. Discard the rails. It is important to replace the screws into the unit to avoid any air or water leakage.

Do not allow the shipping rail to drop on the roof surface.

Damage to the roof surface may result.

Step 3 — Rig and Place Unit —

Inspect unit for transportation damage. See Table 1 for physical data. File any claim with transportation agency.

All panels must be in place when rigging. Unit is not designed for handling by fork truck. Damage to unit can result.

Do not drop unit; keep upright. Use spreader bars over unit to prevent sling or cable damage. Rollers may be used to move unit across a roof. Level by using unit frame as a reference; leveling tolerance is ±

1

/

16

in. per linear ft in any direction. See

Fig. 3 for additional information. Unit rigging weight is shown in Fig. 3.

Four lifting holes are provided in the unit base rails as shown in Fig. 3. Refer to rigging instructions on unit.

POSITIONING — Maintain clearance, per Fig. 4, around and above unit to provide minimum distance from combustible materials, proper airflow, and service access.

Do not install unit in an indoor location. Do not locate air inlets near exhaust vents or other sources of contaminated air.

Although unit is weatherproof, guard against water from higher level runoff and overhangs.

ROOF MOUNT — Check building codes for weight distribution requirements. Unit operating weight is shown in Table 1.

INSTALLATION ONTO CURB — The 50HG units are designed to fit on either the accessory full perimeter curb or onto existing 48/50TJ,HJ or 48/50DP,DR curbs. In either case, correct placement of the unit onto the curb is critical to operating performance. To aid in correct positioning, 3 /

8

-in. diameter locating holes have been added to the unit base rails. When placing the unit, these holes should line up with the roof curb edge as shown in Fig. 5 and 6, to assure proper duct opening alignment. Select the alignment holes suited for the curb being used. For installation on the HJ/TJ/DP/DR curb use the alignment holes located approximately 20 in. from the end of the base rail on the return end of the unit. For placement on the HG curb, use the alignment holes located approximately 2-in. from the end of the base rail on the return end of the unit. See labels on the side of the unit for more details.

SHIPPING RAILS

Fig. 2 — Shipping Rail Removal

3

Fig. 3 — Rigging Details

4

Fig. 4 — Base Unit Dimensions

5

UNIT 50HG

VOLTAGE

NOMINAL CAPACITY (Tons)

OPERATING WEIGHT (lb)

50 SERIES (Cooling Only)

COMPRESSOR

Quantity

Number of Refrigerant Circuits

Oil (ounces) Ckt A...Ckt B...Ckt C

REFRIGERANT TYPE

Expansion Device

Operating Charge (lb)

Circuit A

Circuit B

Circuit C

CONDENSER COIL

Rows...Fins/inch

Total Face area (sq. ft)

CONDENSER FAN

Nominal Cfm (Total, all fans)

Quantity...Diameter (in.)

Motor Hp...Rpm

Watts input (Total)

EVAPORATOR COIL

Rows...Fins/inch

Total Face area (sq. ft)

EVAPORATOR FAN

Quantity...Size

Type Drive

Nominal Cfm

Std Motor Hp

Alt Motor Hp

Motor Nominal Rpm

Std Maximum Continuous Bhp

Std Maximum Continuous Watts

Alt Maximum Continuous Bhp

Alt Maximum Continuous Watts

Motor Frame Size

Motor Frame Size

Fan Drive Rpm Range

Motor Bearing Type

Maximum Allowable Rpm

Motor Pulley Pitch Diameter

Motor Shaft Diameter (in.)

Motor Shaft Diameter (in.)

Belt, Quantity...Type...Length (in.)

Pulley center line distance (in.)

Speed change per full turn of moveable pulley flange (rpm)

Moveable pulley maximum (full turns from closed position)

Factory Pulley Setting

(turns from closed position)

Fan Shaft Diameter (in.)

Factory Speed Setting (rpm)

HIGH PRESSURE SWITCHES (psig)

Cutout

Reset (Auto)

OUTDOOR AIR INLET SCREENS

Quantity...Size (in.)

RETURN AIR FILTERS

Quantity...Size (in.)

LEGEND

Bhp —

Brake Horsepower

TXV —

Thermostatic Expansion Valve

Table 1 — Physical Data

Standard

Alternate

Std motor/Std drive

Std motor/Alt drive

Alt motor/Std drive

Alt motor/Alt drive

Std motor/Std drive

Std motor/Alt drive

Alt motor/Std drive

Alt motor/Alt drive

Standard

Alternate

Std motor/Std drive

Std motor/Alt drive

Alt motor/Std drive

Alt motor/Alt drive

Std motor/Std drive

Std motor/Alt drive

Alt motor/Std drive

Alt motor/Alt drive

2...17

57.78

14,000

4...22

1

/

4

...1100

1400

3...15

23.33

2...15x11

Belt

5000

3.7

5

1725

4.25

3171

5.75

4290

56HZ

S184T

485-613

618-789

778-1021

1000-1227

Ball

1400

3.7-4.7

3.4-4.4

3.1-4.1

4.3-5.3

7

/

8

1 1 /

8

1...BX...51

1...A...45

1...BX...38

1...B...38

11.3-12.3

21

29

41

38

6

2...17

57.78

14,000

4...22

1

/

4

...1100

1400

3...15

23.33

2...15x11

Belt

5000

3

5

1725

3.45

2574

5.75

4290

56H

184T

472-619

609-778

778-1021

1000-1227

Ball

1400

3.1-4.1

3.4-4.4

3.1-4.1

4.3-5.3

7

/

8

1 1 /

8

1...BX...48

1...A...45

1...BX...38

1...B...38

11.3-12.3

25

28

41

38

6

208/230 and 460

12.5

014

575

12.5

2017

208/230 and 460

15

016

2111

575

15

2111

208/230 and 460

17.5

020

2139

575

17.5

2139 2017

2

2

2

2

3

3

3

3

3

3

3

3

72...72...NA

72...72...NA

68...68...68

68...68...68

68...68...72

68...68...72

R-22

TXV TXV TXV TXV TXV TXV

19.6

18.3

NA

19.6

18.3

NA

13.2

12.2

15.4

13.2

12.2

15.4

13.1

12.7

15.2

13.1

12.7

15.2

2...17

57.78

2...17

57.78

14,000

4...22

1

/

4

...1100

1400

14,000

4...22

1

/

4

...1100

1400

Face Split

3...15

23.33

3...15

23.33

2...15x11

Belt

6000

3.7

5

1725

4.25

3171

5.75

4290

56HZ

S184T

618-789

485-613

778-1021

1000-1227

Ball

1400

3.4-4.4

3.7-4.7

3.1-4.1

4.3-5.3

7

/

8

1 1 /

8

1...A...45

1...BX...51

1...BX...38

1...B...38

11.3-12.3

29

21

41

38

6

2...15x11

Belt

6000

3

5

1725

3.45

2574

5.75

4290

56H

184T

609-778

472-619

778-1021

1000-1227

Ball

1400

3.4-4.4

3.1-4.1

3.1-4.1

4.3-5.3

7

/

8

1 1 /

8

1...A...45

1...BX...48

1...BX...38

1...B...38

11.3-12.3

28

25

41

38

6

2...17

57.78

14,000

4...22

1

/

4

...1100

1400

3...15

23.33

2...15x11

Belt

7000

5

7

1

/

2

1725

5.75

4290

8.63

6438

S184T

S213T

658-808

794-974

949-1145

1126-1328

Ball

1400

4.3-5.3

4.3-5.3

5.4-6.6

5.5-6.5

1

1

/

8

1 3 /

8

1...BX...46

1...BX...42

1...BX...46

1...BX...42

10.0-12.2

25

30

33

34

6

2...17

57.78

14,000

4...22

1

/

4

...1100

1400

3...15

23.33

2...15x11

Belt

7000

5

7

1

/

2

1725

5.75

4290

8.63

6438

184T

S213T

658-808

794-974

949-1145

1126-1328

Ball

1400

4.3-5.3

4.3-5.3

5.4-6.6

5.5-6.5

1

1

/

8

1 3 /

8

1...BX...46

1...BX...42

1...BX...46

1...BX...42

10.0-12.2

25

30

33

34

6

1

3

3

/

16

549

426

320

3...20x25

9...16x25

1

3

3

/

16

546

426

320

3...20x25

9...16x25

1

3

3

/

16

704

426

320

3...20x25

9...16x25

1

3

3

/

16

694

426

320

3...20x25

9...16x25

1

3

3

/

16

733

426

320

3...20x25

9...16x25

1

3

3

/

16

733

426

320

3...20x25

9...16x25

6

UNIT 50HG

VOLTAGE

NOMINAL CAPACITY (Tons)

OPERATING WEIGHT (lb)

50 SERIES (Cooling Only)

COMPRESSOR

Quantity

Number of Refrigerant Circuits

Oil (ounces) Ckt A...Ckt B...Ckt C

REFRIGERANT TYPE

Expansion Device

Operating Charge (lb)

Circuit A

Circuit B

Circuit C

CONDENSER COIL

Rows...Fins/inch

Total Face Area (sq. ft)

CONDENSER FAN

Nominal Cfm (Total, all fans)

Quantity...Diameter (in.)

Motor Hp...Rpm

Watts input (Total)

EVAPORATOR COIL

Rows...Fins/inch

Total Face Area (sq. ft)

EVAPORATOR FAN

Quantity...Size

Type Drive

Nominal Cfm

Std Motor Hp

Alt Motor Hp

Motor Nominal Rpm

Std Maximum Continuous Bhp

Std Maximum Continuous Watts

Alt Maximum Continuous Bhp

Alt Maximum Continuous Watts

Motor Frame Size

Motor Frame Size

Fan Drive Rpm Range

Motor Bearing Type

Maximum Allowable Rpm

Motor Pulley Pitch Diameter

Motor Shaft Diameter (in.)

Motor Shaft Diameter (in.)

Belt, Quantity...Type...Length (in.)

Table 1 — Physical Data (cont)

Pulley center line distance (in.)

Speed change per full turn of moveable pulley flange (rpm)

Moveable pulley maximum (full turns from closed position)

Factory Pulley Setting

(turns from closed position)

Fan Shaft Diameter (in.)

Factory Speed Setting (rpm)

HIGH PRESSURE SWITCHES (psig)

Cutout

Reset (Auto)

OUTDOOR AIR INLET SCREENS

Quantity...Size (in.)

RETURN AIR FILTERS

Quantity...Size (in.)

LEGEND

Bhp —

Brake Horsepower

TXV —

Thermostatic Expansion Valve

Standard

Alternate

Std motor/Std drive

Std motor/Alt drive

Alt motor/Std drive

Alt motor/Alt drive

Std motor/Std drive

Std motor/Alt drive

Alt motor/Std drive

Alt motor/Alt drive

Standard

Alternate

Std motor/Std drive

Std motor/Alt drive

Alt motor/Std drive

Alt motor/Alt drive

Std motor/Std drive

Std motor/Alt drive

Alt motor/Std drive

Alt motor/Alt drive

208/230 and 460

20

024

2187

3

3

72...72...72

TXV

13.8

13.9

15.5

2...17

57.78

14,000

4...22

1

/

4

...1100

1400

4...15

23.33

2...15x11

Belt

8000

5

7

1

/

2

1725

5.75

4290

8.63

6438

S184T

S213T

658-808

794-974

949-1145

1126-1328

Ball

1400

4.3-5.3

4.3-5.3

5.4-6.6

5.5-6.5

1

1

/

8

1 3 /

8

1...BX...46

1...BX...42

1...BX...46

1...BX...42

10.0-12.2

25

30

33

34

6

575

20

2187

3

3

72...72...72

R-22

TXV

13.8

13.9

15.5

2...17

57.78

14,000

4...22

1

/

4

...1100

1400

Face Split

4...15

23.33

2...15x11

Belt

8000

5

7

1

/

2

1725

5.75

4290

8.63

6438

184T

S213T

658-808

794-974

949-1145

1126-1328

Ball

1400

4.3-5.3

4.3-5.3

5.4-6.6

5.5-6.5

1

1

/

8

1 3 /

8

1...BX...46

1...BX...42

1...BX...46

1...BX...42

10.0-12.2

25

30

33

34

6

1

3

3

/

16

733

426

320

3...20x25

9...16x25

1

3

3

/

16

733

426

320

3...20x25

9...16x25

028

ALL

25

2446

2

2

110...110...NA

TXV

23.9

21.5

NA

2...17

66.67

21,000

6...22

1

/

4

...1100

2100

4...15

27.22

2...15x11

Belt

10,000

7 1 /

2

10

1725

8.63

6438

11.50

8579

S213T

S215T

799-965

939-1152

945-1187

1152-1366

Ball

1400

5.4-6.6

4.2-5.2

4.2-5.2

5.2-6.2

1

3

/

8

1 3 /

8

1...BX...50

2...AX...38

2...BX...38

2...BX...38

9.6-12.0

28

36

40

36

6

1

3

3

/

16

882

426

320

3...20x25

9...20x25

7

ALIGNMENT

HOLE

(IN BASE RAIL)

ALIGNMENT

HOLE SHOULD

LINE UP WITH

ROOF CURB

EDGE FLANGE

EDGE FLANGE

Fig. 5 — Alignment Hole Details

HORIZONTAL APPLICATIONS — Horizontal units are shipped with outer panels that allow for side by side horizontal duct connections. If specified during ordering, the unit will be shipped with the vertical duct openings blocked off from the factory, ready for side supply installation. If the horizontal option was not specified at time of ordering the unit, a fieldinstalled accessory kit is required to convert the vertical unit into a horizontal supply configuration.

Installation of the duct block-off covers should be completed prior to placing the unit unless sufficient side clearance is available. A minimum of 66-in. is required between the unit and any obstruction to install the duct block-off covers. Side supply duct dimensions and locations are shown on Fig. 4.

Connect ductwork to horizontal duct flange connections on side of unit.

ALIGNMENT

HOLES FOR

HJ, TJ, DP, DR

CURB-BOTH

SIDES

RETURN

OPENING

SUPPLY

OPENING

ALIGNMENT

HOLES FOR HG

CURB-BOTH

SIDES

CURB

RETURN

OPENING

ROOF CURB

CURB

SUPPLY

OPENING

Fig. 6 — Alignment Hole Location

Step 4 — Field Fabricate Ductwork —

Secure all ducts to building structure. Use flexible duct connectors between unit and ducts as required. Insulate and weatherproof all external ductwork, joints, and roof openings with counter flashing and mastic in accordance with applicable codes.

Ducts passing through an unconditioned space must be insulated and covered with a vapor barrier.

Step 5 — Make Unit Duct Connections

VERTICAL CONFIGURATION — Unit is shipped for thruthe-bottom duct connections. Ductwork openings are shown in

Fig. 1 and 4. Duct connections for vertical supply and return configuration are shown in Fig. 7. Field fabricated concentric ductwork may be connected as shown in Fig. 8 and 9. The unit is designed to attach the ductwork to the roof curb. Do not attach duct directly to the unit basepans.

Unit basepans must be supported under the unit and around duct openings in order to prevent air leakage.

For vertical supply and return units, tools or parts could drop into ductwork and cause an injury. Install a 90-degree turn in the return ductwork between the unit and the conditioned space. If a 90-degree elbow cannot be installed, then a grille of sufficient strength and density should be installed to prevent objects from falling into the conditioned space.

Units with electric heat require a 1-in. clearance for the first

24 in. of ductwork. Outlet grilles must not lie directly below unit discharge.

NOTE: A 90-degree elbow must be provided in the supply ductwork to comply with UL (Underwriters’ Laboratories) codes for use with electric heat.

8

SEE

NOTE

SEE

NOTE

AIR

IN

AIR

OUT

NOTE: Do not drill in this area; damage to basepan may result in water leak.

Fig. 7 — Air Distribution —

Vertical Supply and Return

SEE

NOTE

ECONOMIZER

ECONOMIZER

SEE

NOTE

AIR OUT AIR IN

AIR OUT

NOTE: Do not drill in this area; damage to basepan may result in water leak.

Fig. 8 — Air Distribution — Concentric Duct

NOTE: Dimensions A, A

′

, B, and B

′ are obtained from field-supplied ceiling diffuser.

Shaded areas indicate block-off pans.

Fig. 9 — Concentric Duct Details

Step 6 — Trap Condensate Drain —

See Fig. 10 for drain location. One

3

/

4

-in. half coupling is provided outside unit evaporator section for condensate drain connection. A trap at least 4-in. deep must be used. See Fig. 11.

Step 7 — Make Electrical Connections

FIELD POWER SUPPLY — Unit is factory wired for voltage shown on unit nameplate.

When installing units, provide disconnect per NEC (National Electrical Code) of adequate size (MOCP [Maximum

Overcurrent protection] of unit is on the informative plate). See

Tables 2A and 2B. All field wiring must comply with NEC and local codes. Size wire based on MCA (Minimum Circuit

Amps) on the unit informative plate. See Fig. 12 for power wiring connections to the unit power terminal block and equipment grounds.

Route power and ground lines through control box end panel or unit basepan (see Fig. 4) to connections as shown on unit wiring diagram and Fig. 12.

The correct power phasing is critical to the operation of the scroll compressors. An incorrect phasing will result in an alarm being generated and compressor operation lockout.

Should this occur, power phase correction must be made to the incoming power.

Operating voltage to compressor must be within voltage range indicated on unit nameplate. On 3-phase units, voltages between phases must be balanced within 2%.

Unit failure as a result of operation on improper line voltage or excessive phase imbalance constitutes abuse and may cause damage to electrical components.

FIELD CONTROL WIRING — Unit can be controlled with either a Carrier-approved accessory thermostat or a Carrierapproved space temperature sensor. Install thermostat according to the installation instructions included with accessory.

Locate thermostat assembly or space temperature sensor on a solid interior wall in the conditioned space to sense average temperature.

Route thermostat or space temperature sensor cable or equivalent single leads of colored wire from subbase terminals through conduit into unit to low-voltage connections as shown on unit label wiring diagram and in Fig. 13 or 14.

NOTE: For wire runs up to 50 ft, use no. 18 AWG (American

Wire Gage) insulated wire (35 C minimum). For 50 to 75 ft, use no. 16 AWG insulated wire (35 C minimum). For over

75 ft, use no. 14 AWG insulated wire (35 C Minimum). All wire larger than no. 18 AWG cannot be directly connected at the thermostat and will require a junction box and splice at the thermostat.

Fig. 10 — Condensate Drain Details

The unit must be electrically grounded in accordance with local codes and NEC ANSI/NFPA 70 (American National

Standards Institute/National Fire Protection Association).

Field wiring must conform to temperature limitations for type ‘‘T’’ wire. All field wiring must comply with NEC and local requirements.

NOTE: Dimensions in [] are in millimeters.

Fig. 11 — Condensate Drain Piping Details

9

Table 2A — Electrical Data (Units Without Optional Convenience Outlet)

UNIT

SIZE

50HG

NOMINAL

VOLTAGE

(3 Ph, 60 Hz)

VOLTAGE

RANGE

COMPRESSOR

No. 2

OFM

No. 1 No. 3

Min Max RLA LRA RLA LRA RLA LRA Qty Hp

FLA

(ea)

014

208/230

460

575

187

414

518

253

506

633

19.2

9.5

7.6

146.0

73.0

58.4

19.2

9.5

7.6

146.0

73.0

58.4

—

—

—

—

—

—

4.0

4.0

4.0

1

1

1

/

4

1.5

/

4

0.7

/

4

0.7

ELECTRIC kW

—

HEAT

FLA

—

12/16 33/ 38

19/25

38/50

—

15

25

50

—

16

25

48

52/ 60

104/120

—

18

30

60

—

15

24

46

Hp

IFM

FLA

3.7

10.6/ 9.6

5.0

16.7/15.2

3.7

10.6/ 9.6

5.0

16.7/15.2

3.7

10.6 /9.6

5.0

16.7/15.2

3.7

10.6/ 9.6

5.0

16.7/15.2

3.7

5.0

3.7

5.0

3.7

5.0

3.7

5.0

3.0

5.0

3.0

5.0

3.0

5.0

3.0

5.0

4.8

7.6

4.8

7.6

4.8

7.6

4.8

7.6

3.9

6.1

3.9

6.1

3.9

6.1

3.9

6.1

POWER

EXHAUST

POWER

SUPPLY

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

Qty Hp

— —

FLA

(ea)

—

2 1.0

5.9

— — —

2 1.0

5.9

— — —

2 1.0

5.9

— — —

2 1.0

5.9

— — —

2 1.0

5.9

MCA MOCP*

60/ 59 70/ 70

72/ 71 90/ 80

66/ 64 80/ 80

78/ 76 90/ 90

60/ 60 70/ 70

72/ 74 90/ 80

66/ 67 80/ 80

78/ 81 90/ 90

78/ 87 80/ 90

93/102 100/110

— — — 86/ 94 90/100

2 1.0

5.9

101/109 110/110

— — — 143/132 150/150

2 1.0

5.9

158/147 175/150

— — — 151/139 175/150

2 1.0

5.9

166/154 175/175

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

29

35

32

38

29

36

35

40

40

45

35

40

35

43

38

45

62

70

65

73

26

32

24

31

26

34

66

74

70

77

24

30

32

40

44

51

47

55

35

45

40

50

70

80

70

80

30

35

30

35

30

35

80

80

80

80

30

35

40

45

45

60

50

60

DISCONNECT

SIZE

FLA

35

40

35

45

60

70

60

70

30

35

30

35

30

35

80

90

80

90

30

35

35

45

45

50

45

60

80/ 90

100/110

150/150

150/175

150/175

175/175

35

40

35

45

35

40

70/ 70

80/ 80

80/ 70

90/ 90

70/ 70

80/ 80

80/ 70

90/ 90

80/ 90

90/100

LEGEND

LEGEND AND NOTES FOR TABLES 2A AND 2B

FLA —

Full Load Amps

MCA —

Minimum Circuit Amps

HACR —

Heating, Air Conditioning and

MOCP —

Maximum Overcurrent Protection

IFM —

Refrigeration

Indoor (Evaporator) Fan Motor

LRA —

Locked Rotor Amps

NEC —

National Electrical Code

OFM

RLA

—

—

Outdoor (Condenser) Fan Motor

Rated Load Amps

Determine maximum deviation from average voltage.

(AB) 457 – 452 = 5 v

(BC) 464 – 457 = 7 v

(AC) 457 – 455 = 2 v

Maximum deviation is 7 v.

*Fuse or HACR circuit breaker.

†208/230 v 75-kW Electric Heat units must use dual-point wiring. The main table lists the branch circuit values for the refrigeration part of the system. The following two tables list the branch circuit values for the electric heat and values for a feeder circuit for both branch circuits.

Determine percent of voltage imbalance.

% Voltage Imbalance = 100 x

7

457

= 1.53%

This amount of phase imbalance is satisfactory as it is below the maximum allowable

2%.

NOTES:

1. In compliance with NEC requirements for multimotor and combination load equipment

(refer to NEC Articles 430 and 440), the overcurrent protective device for the unit shall be fuse or HACR breaker. Canadian units may be fuse or circuit breaker.

2.

Unbalanced 3-Phase Supply Voltage

Never operate a motor where a phase imbalance in supply voltage is greater than 2%.

Use the following formula to determine the percent of voltage imbalance.

% Voltage Imbalance

= 100 x max voltage deviation from average voltage average voltage

Example: Supply voltage is 460-3-60.

AB = 452 v

BC = 464 v

AC = 455 v

IMPORTANT: If the supply voltage phase imbalance is more than 2%, contact your local electric utility company immediately.

3. The 75-kW 208/240-v electric heat can be factory installed but it must be wired separately in the field.

4. The convenience outlet full load amps (FLA) are 5, 3 and 3 for 208/230, 460, 575-v units, respectively.

5. The FLA load amps provided in the table for electric heaters are based on 208/240, 480 and 600 v.

6. MCA calculation for 50HG014-028 units with electric heaters over 50 kW is = 1.25 x

(IFM + Power Exhaust + Convenience Outlet FLA amps) + 1.00 x (Electric Heater FLA).

Average Voltage =

452 + 464 + 455

3

1371

=

3

= 457

10

Table 2A — Electrical Data (Units Without Optional Convenience Outlet) (cont)

UNIT

SIZE

50HG

NOMINAL

VOLTAGE

(3 Ph, 60 Hz)

VOLTAGE

RANGE

COMPRESSOR

No. 2

OFM

No. 1 No. 3

Min Max RLA LRA RLA LRA RLA LRA Qty Hp

FLA

(ea)

016

208/230

460

575

187

414

518

253

506

633

16.7

9.0

7.0

130.0

70.0

55.0

16.7

9.0

7.0

130.0

70.0

55.0

16.7

9.0

7.0

130.0

70.0

55.0

4.0

4.0

4.0

1

1

1

/

/

/

4

4

4

1.5

0.7

0.7

ELECTRIC kW

—

19/25

HEAT

FLA

—

52/ 60

38/50 104/120

56/75† 156/180

—

25

50

75

—

25

48

78

—

30

60

90

—

24

46

75

Hp

IFM

FLA

3.7

10.6/ 9.6

5.0

16.7/15.2

3.7

10.6/ 9.6

5.0

16.7/15.2

3.7

10.6/ 9.6

5.0

16.7/15.2

3.7

10.6/ 9.6

5.0

16.7/15.2

3.7

5.0

3.7

5.0

3.7

5.0

3.7

5.0

3.0

5.0

3.0

5.0

3.0

5.0

3.0

5.0

4.8

7.6

4.8

7.6

4.8

7.6

4.8

7.6

3.9

6.1

3.9

6.1

3.9

6.1

3.9

6.1

POWER

EXHAUST

POWER

SUPPLY

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

Qty Hp

FLA

(ea)

— — —

2 1.0

5.9

— — —

2 1.0

5.9

— — —

2 1.0

5.9

— — —

MCA

71/ 70

83/ 82

77/ 75

89/ 87

78/ 87

93/102

86/ 94

2 1.0

5.9

101/109

— — — 143/132

2 1.0

5.9

158/147

— — — 151/139

2 1.0

5.9

166/154

— — —

2 1.0

5.9

— — —

2 1.0

5.9

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

MOCP*

71/ 70†

83/ 82†

77/ 75†

80/ 80†

90/ 90†

90/ 90†

89/ 87† 100/100†

37 45

43

40

50

45

46

44

51

47

55

50

45

60

50

60

80/ 80

90/ 90

90/ 90

100/100

80/ 90

100/110

90/100

110/110

150/150

175/150

175/150

175/175

35

43

38

45

62

70

65

73

80

88

83

90

66

74

70

77

96

104

100

107

29

36

32

38

35

45

40

50

70

80

70

80

90

100

90

100

80

80

80

80

110

110

110

125

35

40

35

40

DISCONNECT

SIZE

FLA

35

40

35

45

60

70

60

70

100

100

100

110

80

90

80

90

110

125

125

125

35

40

35

45

80/ 80†

100/ 90†

90/ 90†

100/100†

40

50

45

60

45

50

45

60

80/ 80

100/ 90

90/ 90

100/100

80/ 90

100/100

90/ 90

100/110

150/150

150/175

150/175

175/175

ELECTRIC HEAT BRANCH CIRCUIT FOR 208/240-V 75-kW ELECTRIC HEAT

UNIT

SIZE

50HG

NOMINAL

VOLTAGE

(3 Ph, 60 Hz)

016

208/240

VOLTAGE

RANGE

No. 1

COMPRESSOR

No. 2 No. 3

OFM

ELECTRIC

HEAT

IFM

POWER

EXHAUST

POWER

SUPPLY

Min

187

Max

253

RLA

NA

LRA

NA

RLA

NA

LRA

NA

RLA

NA

LRA Qty Hp

FLA

(ea) kW FLA Hp FLA Qty Hp

FLA

(ea)

MCA MOCP*

NA NA NA NA 56/75 156/180 NA NA NA NA NA 156/180 175/200

DISCONNECT

SIZE

FLA

200/225

FEEDER CIRCUIT FOR 208/230-V UNIT WITH 75-kW ELECTRIC HEAT

UNIT

SIZE

50HG

016

NOMINAL

VOLTAGE

(3 Ph, 60 Hz)

208/230

VOLTAGE

RANGE

Min

187

Max

253

No. 1

RLA

16.7

LRA

130.0

COMPRESSOR

No. 2

RLA

16.7

LRA

130.0

No. 3

RLA

16.7

LRA

130.0

Qty Hp

4.0

OFM

1 /

4

FLA

(ea)

ELECTRIC kW

HEAT

FLA

1.5

56/75 156/180

Hp

IFM

FLA

3.7

10.6/ 9.6

5.0

16.7/15.2

POWER

EXHAUST

POWER

SUPPLY

Qty Hp

FLA

(ea)

MCA MOCP*

— 169/192 200/225 — —

2 1.0

5.9

184/207 200/225

— — — 177/199 200/225

2 1.0

5.9

192/214 200/225

See Legend and Notes on page 10.

DISCONNECT

SIZE

FLA

200/225

225/250

200/225

225/250

11

Table 2A — Electrical Data (Units Without Optional Convenience Outlet) (cont)

UNIT

SIZE

50HG

NOMINAL

VOLTAGE

(3 Ph, 60 Hz)

VOLTAGE

RANGE

No. 1

Min Max RLA LRA

COMPRESSOR

No. 2

RLA LRA

No. 3

RLA LRA

OFM

Qty Hp

FLA

(ea)

020

208/230

460

575

187

414

518

253

506

633

16.7

9.0

7.0

130.0

70.0

55.0

16.7

9.0

7.0

130.0

70.0

55.0

22.4

10.7

9.3

184.0

90.0

73.0

4.0

4.0

4.0

1

1

1

/

/

/

4

4

4

1.5

0.7

0.7

ELECTRIC kW

—

HEAT

19/25

FLA

—

52/ 60

38/50 104/120

56/75† 156/180

—

25

50

75

—

25

48

78

—

30

60

90

—

24

46

75

Hp

IFM

FLA

5.0

16.7/15.2

7.5

24.2/22.0

5.0

16.7/15.2

7.5

24.2/22.0

5.0

16.7/15.2

7.5

24.2/22.0

5.0

16.7/15.2

7.5

24.2/22.0

5.0

7.5

5.0

7.5

5.0

7.5

5.0

7.5

5.0

7.5

5.0

7.5

5.0

7.5

5.0

7.5

7.6

11.0

7.6

11.0

7.6

11.0

7.6

11.0

6.1

9.0

6.1

9.0

6.1

9.0

6.1

9.0

POWER

EXHAUST

POWER

SUPPLY

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

Qty Hp

FLA

(ea)

— — —

2 1.0

5.9

— — —

MCA

84/ 83

96/ 94

92/ 89

2 1.0

5.9

104/101

— — — 86/ 94

2 1.0

5.9

101/109

— — — 95/103

2 1.0

5.9

110/117

— — — 151/139

2 1.0

5.9

166/154

— — — 160/148

2 1.0

5.9

175/162

MOCP*

— — —

2 1.0

5.9

— — —

84/ 83† 100/100†

96/ 94† 110/110†

92/ 89† 110/110†

2 1.0

5.9

104/101† 125/110†

— — — 42 50

2 1.0

3.1

— — —

48

45

50

50

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

51

47

55

51

59

60

50

60

60

60

100/100

110/110

110/110

125/110

100/100

110/110

110/110

125/125

175/150

175/175

175/150

200/175

38

45

41

49

65

73

69

77

83

90

86

94

70

77

74

82

100

107

104

112

35

41

37

44

40

50

45

50

70

80

70

80

90

100

100

100

80

80

80

90

110

125

125

125

40

50

45

50

DISCONNECT

SIZE

FLA

40

45

45

50

60

70

70

80

100

110

100

110

80

90

90

90

125

125

125

125

40

45

45

50

100/ 90†

110/110†

100/100†

125/110†

45

60

50

60

45

60

50

60

100/ 90

110/110

100/100

125/110

100/ 90

110/110

100/100

125/110

150/175

175/175

150/175

175/200

ELECTRIC HEAT BRANCH CIRCUIT FOR 208/240-V 75-kW ELECTRIC HEAT

UNIT

SIZE

50HG

NOMINAL

VOLTAGE

(3 Ph, 60 Hz)

020

208/240

VOLTAGE

RANGE

No. 1

COMPRESSOR

No. 2 No. 3

OFM

ELECTRIC

HEAT

IFM

POWER

EXHAUST

POWER

SUPPLY

Min

187

Max

253

RLA

NA

LRA

NA

RLA

NA

LRA

NA

RLA

NA

LRA Qty Hp

FLA

(ea) kW FLA Hp FLA Qty Hp

FLA

(ea)

MCA MOCP*

NA NA NA NA 56/75 156/180 NA NA NA NA NA 156/180 175/200

DISCONNECT

SIZE

FLA

200/225

FEEDER CIRCUIT FOR 208/230-V UNIT WITH 75-kW ELECTRIC HEAT

UNIT

SIZE

50HG

020

NOMINAL

VOLTAGE

(3 Ph, 60 Hz)

208/230

VOLTAGE

RANGE

Min

187

Max

253

No. 1

RLA

16.7

LRA

130.0

COMPRESSOR

No. 2

RLA

16.7

LRA

130.0

No. 3

RLA

22.4

LRA

184.0

Qty Hp

4.0

OFM

1 /

4

FLA

(ea)

ELECTRIC kW

HEAT

FLA

1.5

56/75 156/180

Hp

IFM

FLA

5.0

16.7/15.2

7.5

24.2/22.0

POWER

EXHAUST

POWER

SUPPLY

Qty Hp

FLA

(ea)

MCA MOCP*

— 177/199 200/225 — —

2 1.0

5.9

192/214 200/225

— — — 186/208 200/225

2 1.0

5.9

201/222 225/225

See Legend and Notes on page 10.

DISCONNECT

SIZE

FLA

200/225

225/250

225/250

225/250

12

Table 2A — Electrical Data (Units Without Optional Convenience Outlet) (cont)

UNIT

SIZE

50HG

NOMINAL

VOLTAGE

(3 Ph, 60 Hz)

VOLTAGE

RANGE

No. 1

Min Max RLA LRA

COMPRESSOR

No. 2

RLA LRA

No. 3

RLA LRA

OFM

Qty Hp

FLA

(ea)

024

208/230

460

575

187

414

518

253

506

633

22.4

10.7

9.3

184.0

90.0

73.0

22.4

10.7

9.3

184.0

90.0

73.0

22.4

10.7

9.3

184.0

90.0

73.0

4.0

4.0

4.0

1

1

1

/

/

/

4

4

4

1.5

0.7

0.7

ELECTRIC kW

—

HEAT

19/25

FLA

—

52/ 60

38/50 104/120

56/75† 156/180

—

25

50

75

—

25

48

78

—

30

60

90

—

24

46

75

Hp

IFM

FLA

5.0

16.7/15.2

7.5

24.2/22.0

5.0

16.7/15.2

7.5

24.2/22.0

5.0

16.7/15.2

7.5

24.2/22.0

5.0

16.7/15.2

7.5

24.2/22.0

5.0

7.5

5.0

7.5

5.0

7.5

5.0

7.5

5.0

7.5

5.0

7.5

5.0

7.5

5.0

7.5

7.6

11.0

7.6

11.0

7.6

11.0

7.6

11.0

6.1

9.0

6.1

9.0

6.1

9.0

6.1

9.0

POWER

EXHAUST

POWER

SUPPLY

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

Qty Hp

FLA

(ea)

MCA

— — — 96/ 94

2 1.0

5.9

107/106

— — — 104/101

2 1.0

5.9

115/113

— — — 96/ 94

2 1.0

5.9

107/109

— — — 104/103

2 1.0

5.9

115/117

— — — 151/139

2 1.0

5.9

166/154

— — — 160/148

2 1.0

5.9

175/162

MOCP*

— — — 96/ 94† 110/110†

2 1.0

5.9

107/106† 125/125†

— — — 104/101† 125/110†

2 1.0

5.9

115/113† 125/125†

— — — 45 50

2 1.0

3.1

— — —

51

49

60

50

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

55

47

55

51

59

60

50

60

60

60

110/110

125/125

125/110

125/125

110/110

125/125

125/110

125/125

175/150

175/175

175/150

200/175

39

45

42

49

65

73

69

77

83

90

86

94

70

77

74

82

100

107

104

112

39

45

42

48

45

50

50

50

70

80

70

80

90

100

100

100

80

80

80

90

110

125

125

125

45

50

50

50

DISCONNECT

SIZE

FLA

45

50

50

60

60

70

70

80

100

110

100

110

80

90

90

90

125

125

125

125

45

50

50

60

110/110†

125/125†

125/110†

150/125†

50

60

60

60

50

60

60

60

110/110

125/125

125/110

150/125

110/110

125/125

125/110

150/125

150/175

175/175

150/175

175/200

ELECTRIC HEAT BRANCH CIRCUIT FOR 208/240-V 75-kW ELECTRIC HEAT

UNIT

SIZE

50HG

NOMINAL

VOLTAGE

(3 Ph, 60 Hz)

024

208/240

VOLTAGE

RANGE

No. 1

COMPRESSOR

No. 2 No. 3

OFM

ELECTRIC

HEAT

IFM

POWER

EXHAUST

POWER

SUPPLY

Min

187

Max

253

RLA

NA

LRA

NA

RLA

NA

LRA

NA

RLA

NA

LRA Qty Hp

FLA

(ea) kW FLA Hp FLA Qty Hp

FLA

(ea)

MCA MOCP*

NA NA NA NA 56/75 156/180 NA NA NA NA NA 156/180 175/200

DISCONNECT

SIZE

FLA

200/225

FEEDER CIRCUIT FOR 208/230-V UNIT WITH 75-kW ELECTRIC HEAT

UNIT

SIZE

50HG

024

NOMINAL

VOLTAGE

(3 Ph, 60 Hz)

208/230

VOLTAGE

RANGE

Min

187

Max

253

No. 1

RLA

22.4

LRA

184.0

COMPRESSOR

No. 2

RLA

22.4

LRA

184.0

No. 3

RLA

22.4

LRA

184.0

Qty Hp

4.0

OFM

1 /

4

FLA

(ea)

ELECTRIC kW

HEAT

FLA

1.5

56/75 156/180

Hp

5.0

16.7/15.2

7.5

IFM

FLA

24.2/22

POWER

EXHAUST

POWER

SUPPLY

Qty Hp

FLA

(ea)

MCA MOCP*

— 177/199 200/225 — —

2 1.0

5.9

192/214 200/225

— — — 186/208 200/225

2 1.0

5.9

201/222 225/225

See Legend and Notes on page 10.

DISCONNECT

SIZE

FLA

200/225

225/250

225/250

225/250

13

Table 2A — Electrical Data (Units Without Optional Convenience Outlet) (cont)

UNIT

SIZE

50HG

NOMINAL

VOLTAGE

(3 Ph, 60 Hz)

VOLTAGE

RANGE

No. 1

Min Max RLA LRA

COMPRESSOR

No. 2

RLA LRA

No. 3

OFM

RLA LRA Qty Hp

FLA

(ea)

028

208/230

460

575

187

414

518

253

506

633

47.1

19.6

15.8

245.0

125.0

100.0

47.1

19.6

15.8

245.0

125.0

100.0

—

—

—

—

—

—

6.0

6.0

6.0

1

1

1

/

/

/

4

4

4

1.5

0.7

0.7

ELECTRIC kW

—

19/25

HEAT

FLA

—

52/ 60

38/50 104/120

56/75† 156/180

—

25

50

75

—

25

48

78

—

30

60

90

—

24

46

75

Hp

7.5

10.0

30.8/28.0

7.5

24.2/22.0

10.0

30.8/28.0

7.5

10.0

30.8/28.0

7.5

24.2/22.0

10.0

30.8/28.0

7.5

10.0

7.5

10.0

7.5

10.0

7.5

10.0

7.5

10.0

7.5

10.0

7.5

10.0

7.5

10.0

IFM

FLA

24.2/22.0

24.2/22.0

11.0

14.0

11.0

14.0

11.0

14.0

11.0

14.0

9.0

11.0

9.0

11.0

9.0

11.0

9.0

11.0

POWER

EXHAUST

POWER

SUPPLY

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

Qty Hp

FLA

(ea)

MCA

— — — 139/137

2 1.0

5.9

151/149

— — — 146/143

2 1.0

5.9

158/155

— — — 139/137

2 1.0

5.9

151/149

— — — 146/143

2 1.0

5.9

158/155

— — — 160/148

2 1.0

5.9

175/162

— — — 169/155

2 1.0

5.9

183/170

MOCP*

— — — 139/137† 175/175†

2 1.0

5.9

151/149† 175/175†

— — — 146/143† 175/175†

2 1.0

5.9

158/155† 200/200†

— — — 59 70

2 1.0

3.1

— — —

66

62

80

80

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

69

59

66

62

69

80

70

80

80

80

175/175

175/175

175/175

200/200

175/175

175/175

175/175

200/200

175/175

200/175

175/175

200/200

49

55

51

57

69

77

71

79

86

94

89

97

74

82

78

85

104

112

108

115

49

55

51

57

60

70

60

70

70

80

80

80

100

100

100

100

80

90

90

90

125

125

125

125

60

70

60

70

DISCONNECT

SIZE

FLA

60

60

60

70

70

80

70

80

100

110

100

110

90

90

90

100

125

125

125

150

60

60

60

70

150/150†

175/175†

175/175†

175/175†

70

70

70

80

70

70

70

80

150/150

175/175

175/175

175/175

150/150

175/175

175/175

175/175

150/175

175/200

175/175

175/200

ELECTRIC HEAT BRANCH CIRCUIT FOR 208/240-V 75-kW ELECTRIC HEAT

UNIT

SIZE

50HG

NOMINAL

VOLTAGE

(3 Ph, 60 Hz)

028

208/240

VOLTAGE

RANGE

No. 1

COMPRESSOR

No. 2 No. 3

OFM

ELECTRIC

HEAT

IFM

POWER

EXHAUST

POWER

SUPPLY

Min

187

Max

253

RLA

NA

LRA

NA

RLA

NA

LRA

NA

RLA

NA

LRA Qty Hp

FLA

(ea) kW FLA Hp FLA Qty Hp

FLA

(ea)

MCA MOCP*

NA NA NA NA 56/75 156/180 NA NA NA NA NA 156/180 175/200

DISCONNECT

SIZE

FLA

200/225

FEEDER CIRCUIT FOR 208/230-V UNIT WITH 75-kW ELECTRIC HEAT

UNIT

SIZE

50HG

028

NOMINAL

VOLTAGE

(3 Ph, 60 Hz)

208/230

VOLTAGE

RANGE

Min

187

Max

253

No. 1

RLA

47.1

LRA

245.0

COMPRESSOR

No. 2

RLA

47.1

LRA

245.0

RLA

—

No. 3

LRA Qty Hp

— 6.0

OFM

1 /

4

FLA

(ea)

ELECTRIC kW

HEAT

FLA

1.5

56/75 156/180

Hp

IFM

FLA

7.5

24.2/22.0

10.0

30.8/28.0

POWER

EXHAUST

POWER

SUPPLY

Qty Hp

FLA

(ea)

MCA MOCP*

— 186/208 200/225 — —

2 1.0

5.9

201/222 225/225

— — — 195/215 225/225

2 1.0

5.9

209/230 225/250

See Legend and Notes on page 10.

DISCONNECT

SIZE

FLA

225/250

225/250

225/250

250/300

14

Table 2B — Electrical Data (Units With Optional Convenience Outlet)

UNIT

SIZE

50HG

NOMINAL

VOLTAGE

(3 Ph, 60 Hz)

VOLTAGE

RANGE

COMPRESSOR

No. 2

OFM

No. 1 No. 3

Min Max RLA LRA RLA LRA RLA LRA Qty Hp

FLA

(ea)

014

208/230

460

575

187

414

518

253

506

633

19.2

9.5

7.6

146.0

73.0

58.4

19.2

9.5

7.6

146.0

73.0

58.4

—

—

—

—

—

—

4.0

4.0

4.0

1

1

1

/

/

/

4

4

4

1.5

0.7

0.7

ELECTRIC kW

—

HEAT

12/16 33/ 38

19/25 52/ 60

38/50

—

15

25

50

—

16

25

48

FLA

—

104/120

—

18

30

60

—

15

24

46

Hp

IFM

FLA

3.7

10.6/ 9.6

5.0

16.7/15.2

3.7

10.6/ 9.6

5.0

16.7/15.2

3.7

10.6/ 9.6

5.0

16.7/15.2

3.7

10.6/ 9.6

5.0

16.7/15.2

3.7

5.0

3.7

5.0

3.7

5.0

3.7

5.0

3.0

5.0

3.0

5.0

3.0

5.0

3.0

5.0

4.8

7.6

4.8

7.6

4.8

7.6

4.8

7.6

3.9

6.1

3.9

6.1

3.9

6.1

3.9

6.1

POWER

EXHAUST

POWER

SUPPLY

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

Qty Hp

FLA

(ea)

— — —

2 1.0

5.9

— — —

2 1.0

5.9

— — —

2 1.0

5.9

— — —

MCA

65/ 64

77/ 76

71/ 69

MOCP*

80/ 80

90/ 90

90/ 80

83/ 81 100/100

65/ 66 80/ 80

77/ 81 90/ 90

71/ 73 90/ 80

2 1.0

5.9

— — —

2 1.0

5.9

83/ 88 100/100

85/ 93 90/100

99/108 100/110

— — — 92/100 100/110

2 1.0

5.9

107/115 110/125

— — — 150/138 150/150

2 1.0

5.9

164/153 175/175

— — — 157/145 175/150

2 1.0

5.9

172/160 175/175

— — — 32 40

2 1.0

3.1

— — —

38

35

45

40

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

41

32

40

36

44

50

40

45

40

50

27

35

30

38

39

46

41

49

66

74

69

77

47

55

51

59

70

78

73

81

27

33

29

36

30

40

35

40

40

50

45

50

70

80

70

80

50

60

60

60

80

80

80

90

30

40

35

40

DISCONNECT

SIZE

FLA

30

35

30

35

35

40

35

45

60

70

60

70

45

50

45

60

80

90

80

90

30

35

30

35

150/150

150/175

150/175

175/175

35

40

35

45

35

40

35

45

70/ 70

80/ 80

80/ 70

90/ 90

70/ 70

80/ 80

80/ 70

90/ 90

80/ 90

90/100

80/ 90

100/110

See Legend and Notes on page 10.

15

Table 2B — Electrical Data (Units With Optional Convenience Outlet) (cont)

UNIT

SIZE

50HG

NOMINAL

VOLTAGE

(3 Ph, 60 Hz)

VOLTAGE

RANGE

COMPRESSOR

No. 2

OFM

No. 1 No. 3

Min Max RLA LRA RLA LRA RLA LRA Qty Hp

FLA

(ea)

016

208/230

460

575

187

414

518

253

506

633

16.7

9.0

7.0

130.0

70.0

55.0

16.7

9.0

7.0

130.0

70.0

55.0

16.7

9.0

7.0

130.0

70.0

55.0

4.0

4.0

4.0

1

1

1

/

/

/

4

4

4

1.5

0.7

0.7

ELECTRIC kW

—

19/25

HEAT

FLA

—

52/ 60

38/50 104/120

56/75† 156/180

—

25

50

75

—

25

48

78

—

30

60

90

—

24

46

75

Hp

IFM

FLA

3.7

10.6/ 9.6

5.0

16.7/15.2

3.7

10.6/ 9.6

5.0

16.7/15.2

3.7

10.6/ 9.6

5.0

16.7/15.2

3.7

10.6/ 9.6

5.0

16.7/15.2

3.7

5.0

3.7

5.0

3.7

5.0

3.7

5.0

3.0

5.0

3.0

5.0

3.0

5.0

3.0

5.0

4.8

7.6

4.8

7.6

4.8

7.6

4.8

7.6

3.9

6.1

3.9

6.1

3.9

6.1

3.9

6.1

POWER

EXHAUST

POWER

SUPPLY

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

Qty Hp

FLA

(ea)

— — —

2 1.0

5.9

— — —

2 1.0

5.9

— — —

2 1.0

5.9

— — —

MCA

76/ 75

88/ 87

82/ 80

94/ 92

85/ 93

99/108

92/100

2 1.0

5.9

107/115

— — — 150/138

2 1.0

5.9

164/153

— — — 157/145

2 1.0

5.9

172/160

— — —

2 1.0

5.9

— — —

2 1.0

5.9

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

MOCP*

76/ 75† 90/ 90†

88/ 87† 100/100†

82/ 80† 90/ 90†

94/ 92† 110/100†

40 45

46

43

50

50

49

47

55

51

59

50

50

60

60

60

90/ 90

100/100

90/ 90

110/100

90/100

100/110

100/110

110/125

150/150

175/175

175/150

175/175

39

46

41

49

66

74

69

77

84

91

86

94

70

78

73

81

100

108

103

111

32

39

35

41

40

50

45

50

70

80

70

80

90

100

100

100

80

80

80

90

110

125

125

125

35

45

40

50

DISCONNECT

SIZE

FLA

35

40

35

45

60

70

60

70

100

100

100

110

80

90

80

90

110

125

125

125

35

40

35

45

80/ 80†

100/ 90†

90/ 90†

100/100†

40

50

45

60

45

50

45

60

80/ 80

100/ 90

90/ 90

100/100

80/ 90

100/100

90/ 90

100/110

150/150

150/175

150/175

175/175

ELECTRIC HEAT BRANCH CIRCUIT FOR 208/240-V 75-kW ELECTRIC HEAT

UNIT

SIZE

50HG

NOMINAL

VOLTAGE

(3 Ph, 60 Hz)

016

208/240

VOLTAGE

RANGE

No. 1

COMPRESSOR

No. 2 No. 3

OFM

ELECTRIC

HEAT

IFM

POWER

EXHAUST

POWER

SUPPLY

Min

187

Max

253

RLA

NA

LRA

NA

RLA

NA

LRA

NA

RLA

NA

LRA Qty Hp

FLA

(ea) kW FLA Hp FLA Qty Hp

FLA

(ea)

MCA MOCP*

NA NA NA NA 56/75 156/180 NA NA NA NA NA 156/180 175/200

DISCONNECT

SIZE

FLA

200/225

FEEDER CIRCUIT FOR 208/230-V UNIT WITH 75-kW ELECTRIC HEAT

UNIT

SIZE

50HG

016

NOMINAL

VOLTAGE

(3 Ph, 60 Hz)

208/230

VOLTAGE

RANGE

No. 1

COMPRESSOR

No. 2 No. 3

OFM

Min Max RLA LRA RLA LRA RLA LRA Qty Hp

FLA

(ea)

ELECTRIC kW

HEAT

FLA

187 253 16.7

130.0

16.7

130.0

16.7

130.0

4.0

1/4 1.5

56/75 156/180

Hp

IFM

FLA

3.7

10.6/ 9.6

5.0

16.7/15.2

POWER

EXHAUST

POWER

SUPPLY

Qty Hp

FLA

(ea)

MCA MOCP*

— 176/198 200/225 — —

2 1.0

5.9

190/213 200/225

— — — 183/205 200/225

2 1.0

5.9

198/220 200/225

See Legend and Notes on page 10.

DISCONNECT

SIZE

FLA

200/225

225/250

200/225

225/250

16

Table 2B — Electrical Data (Units With Optional Convenience Outlet) (cont)

UNIT

SIZE

50HG

NOMINAL

VOLTAGE

(3 Ph, 60 Hz)

VOLTAGE

RANGE

No. 1

COMPRESSOR

No. 2 No. 3

OFM

Min Max RLA LRA RLA LRA RLA LRA Qty Hp

FLA

(ea)

020

208/230

460

575

187

414

518

253

506

633

16.7

9.0

7.0

130.0

70.0

55.0

16.7

9.0

7.0

130.0

70.0

55.0

22.4

10.7

9.3

184.0

90.0

73.0

4.0

4.0

4.0

1

1

1

/

/

/

4

4

4

1.5

0.7

0.7

ELECTRIC kW

—

19/25

HEAT

FLA

—

52/ 60

38/50 104/120

56/75† 156/180

—

25

50

75

—

25

48

78

—

30

60

90

—

24

46

75

Hp

IFM

FLA

5.0

16.7/15.2

7.5

24.2/22.0

5.0

16.7/15.2

7.5

24.2/22.0

5.0

16.7/15.2

7.5

24.2/22.0

5.0

16.7/15.2

7.5

24.2/22.0

5.0

7.5

5.0

7.5

5.0

7.5

5.0

7.5

5.0

7.5

5.0

7.5

5.0

7.5

5.0

7.5

7.6

11.0

7.6

11.0

7.6

11.0

7.6

11.0

6.1

9.0

6.1

9.0

6.1

9.0

6.1

9.0

POWER

EXHAUST

POWER

SUPPLY

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

Qty Hp

FLA

(ea)

MCA

— — — 89/ 88

2 1.0

5.9

101/ 99

— — — 97/ 94

2 1.0

5.9

109/106

— — — 92/100

2 1.0

5.9

107/115

— — — 102/109

2 1.0

5.9

116/124

— — — 157/145

2 1.0

5.9

172/160

— — — 167/154

2 1.0

5.9

181/169

MOCP*

— — — 89/ 88† 110/110†

2 1.0

5.9

101/ 99† 110/110†

— — — 97/ 94† 110/110†

2 1.0

5.9

109/106† 125/125†

— — — 45 50

2 1.0

3.1

— — —

51

48

60

50

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

54

51

59

55

63

60

60

60

60

70

110/110

110/110

110/110

125/125

110/110

110/125

110/110

125/125

175/150

175/175

175/175

200/175

41

49

45

53

69

77

73

80

86

94

90

98

73

81

78

85

103

111

108

115

38

44

40

47

45

50

45

60

70

80

80

90

100

100

100

100

80

90

80

90

125

125

125

125

45

50

45

50

DISCONNECT

SIZE

FLA

40

45

45

50

60

70

70

80

100

110

100

110

80

90

90

90

125

125

125

125

40

45

45

50

100/ 90†

110/110†

100/100†

125/110†

45

60

50

60

45

60

50

60

100/ 90

110/110

100/100

125/110

100/ 90

110/110

100/100

125/110

150/175

175/175

150/175

175/200

ELECTRIC HEAT BRANCH CIRCUIT FOR 208/240-V 75-kW ELECTRIC HEAT

UNIT

SIZE

50HG

NOMINAL

VOLTAGE

(3 Ph, 60 Hz)

020

208/240

VOLTAGE

RANGE

No. 1

COMPRESSOR

No. 2 No. 3

OFM

ELECTRIC

HEAT

IFM

POWER

EXHAUST

POWER

SUPPLY

Min

187

Max

253

RLA

NA

LRA

NA

RLA

NA

LRA

NA

RLA

NA

LRA Qty Hp

FLA

(ea) kW FLA Hp FLA Qty Hp

FLA

(ea)

MCA MOCP*

NA NA NA NA 56/75 156/180 NA NA NA NA NA 156/180 175/200

DISCONNECT

SIZE

FLA

200/225

FEEDER CIRCUIT FOR 208/230-V UNIT WITH 75-kW ELECTRIC HEAT

UNIT

SIZE

50HG

020

NOMINAL

VOLTAGE

(3 Ph, 60 Hz)

208/230

VOLTAGE

RANGE

Min

187

Max

253

No. 1

RLA

16.7

LRA

130.0

COMPRESSOR

No. 2

RLA

16.7

LRA

130.0

No. 3

RLA

22.4

LRA

184.0

Qty Hp

4.0

OFM

1 /

4

FLA

(ea)

ELECTRIC kW

HEAT

FLA

1.5

56/75 156/180

Hp

IFM

FLA

5.0

16.7/15.2

7.5

24.2/22.0

POWER

EXHAUST

POWER

SUPPLY

Qty Hp

FLA

(ea)

MCA MOCP*

— 183/205 200/225 — —

2 1.0

5.9

198/220 200/225

— — — 193/214 200/225

2 1.0

5.9

207/229 225/250

See Legend and Notes on page 10.

DISCONNECT

SIZE

FLA

200/225

225/250

225/250

225/250

17

Table 2B — Electrical Data (Units With Optional Convenience Outlet) (cont)

UNIT

SIZE

50HG

NOMINAL

VOLTAGE

(3 Ph, 60 Hz)

VOLTAGE

RANGE

No. 1

Min Max RLA LRA

COMPRESSOR

No. 2

RLA LRA

No. 3

RLA LRA

OFM

Qty Hp

FLA

(ea)

024

208/230

460

575

187

414

518

253

506

633

22.4

10.7

9.3

184.0

90.0

73.0

22.4

10.7

9.3

184.0

90.0

73.0

22.4

10.7

9.3

184.0

90.0

73.0

4.0

4.0

4.0

1

1

1

/

/

/

4

4

4

1.5

0.7

0.7

ELECTRIC kW

—

HEAT

19/25

FLA

—

52/ 60

38/50 104/120

56/75† 156/180

—

25

50

75

—

25

48

78

—

30

60

90

—

24

46

75

Hp

IFM

FLA

5.0

16.7/15.2

7.5

24.2/22.0

5.0

16.7/15.2

7.5

24.2/22.0

5.0

16.7/15.2

7.5

24.2/22.0

5.0

16.7/15.2

7.5

24.2/22.0

5.0

7.5

5.0

7.5

5.0

7.5

5.0

7.5

5.0

7.5

5.0

7.5

5.0

7.5

5.0

7.5

7.6

11.0

7.6

11.0

7.6

11.0

7.6

11.0

6.1

9.0

6.1

9.0

6.1

9.0

6.1

9.0

POWER

EXHAUST

POWER

SUPPLY

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

Qty Hp

FLA

(ea)

MCA

— — — 101/ 99

2 1.0

5.9

112/111

— — — 109/106

2 1.0

5.9

120/118

— — — 101/100

2 1.0

5.9

112/115

— — — 109/109

2 1.0

5.9

120/124

— — — 157/145

2 1.0

5.9

172/160

— — — 167/154

2 1.0

5.9

181/169

MOCP*

— — — 101/ 99† 110/110†

2 1.0

5.9

112/111† 125/125†

— — — 109/106† 125/125†

2 1.0

5.9

120/118† 125/125†

— — — 48 50

2 1.0

3.1

— — —

54

52

60

60

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

58

51

59

55

63

60

60

60

60

70

110/110

125/125

125/125

125/125

110/110

125/125

125/125

125/125

175/150

175/175

175/175

200/175

42

49

45

53

69

77

73

80

86

94

90

98

73

81

78

85

103

111

108

115

42

48

45

51

50

50

50

60

70

80

80

90

100

100

100

100

80

90

80

90

125

125

125

125

50

50

50

60

DISCONNECT

SIZE

FLA

45

50

50

60

60

70

70

80

100

110

100

110

80

90

90

90

125

125

125

125

45

50

50

60

110/110†

125/125†

125/110†

150/125†

50

60

60

60

50

60

60

60

110/110

125/125

125/110

150/125

110/110

125/125

125/110

150/125

150/175

175/175

150/175

175/200

ELECTRIC HEAT BRANCH CIRCUIT FOR 208/240-V 75-kW ELECTRIC HEAT

UNIT

SIZE

50HG

NOMINAL

VOLTAGE

(3 Ph, 60 Hz)

024

208/240

VOLTAGE

RANGE

No. 1

COMPRESSOR

No. 2 No. 3

OFM

ELECTRIC

HEAT

IFM

POWER

EXHAUST

POWER

SUPPLY

Min

187

Max

253

RLA

NA

LRA

NA

RLA

NA

LRA

NA

RLA

NA

LRA Qty Hp

FLA

(ea) kW FLA Hp FLA Qty Hp

FLA

(ea)

MCA MOCP*

NA NA NA NA 56/75 156/180 NA NA NA NA NA 156/180 175/200

DISCONNECT

SIZE

FLA

200/225

FEEDER CIRCUIT FOR 208/230-V UNIT WITH 75-kW ELECTRIC HEAT

UNIT

SIZE

50HG

024

NOMINAL

VOLTAGE

(3 Ph, 60 Hz)

208/230

VOLTAGE

RANGE

Min

187

Max

253

No. 1

RLA

22.4

LRA

184.0

COMPRESSOR

No. 2

RLA

22.4

LRA

184.0

No. 3

RLA

22.4

LRA

184.0

Qty Hp

4.0

OFM

1 /

4

FLA

(ea)

ELECTRIC kW

HEAT

FLA

1.5

56/75 156/180

Hp

IFM

FLA

5.0

16.7/15.2

7.5

24.2/22.0

POWER

EXHAUST

POWER

SUPPLY

Qty Hp

FLA

(ea)

MCA MOCP*

— 183/205 200/225 — —

2 1.0

5.9

198/220 200/225

— — — 193/214 200/225

2 1.0

5.9

207/229 225/250

See Legend and Notes on page 10.

DISCONNECT

SIZE

FLA

200/225

225/250

225/250

225/250

18

Table 2B — Electrical Data (Units With Optional Convenience Outlet) (cont)

UNIT

SIZE

50HG

NOMINAL

VOLTAGE

(3 Ph, 60 Hz)

VOLTAGE

RANGE

No. 1

Min Max RLA LRA

COMPRESSOR

No. 2

RLA LRA

No. 3

OFM

RLA LRA Qty Hp

FLA

(ea)

028

208/230

460

575

187

414

518

253

506

633

47.1

19.6

15.8

245.0

125.0

100.0

47.1

19.6

15.8

245.0

125.0

100.0

—

—

—

—

—

—

6.0

6.0

6.0

1

1

1

/

/

/

4

4

4

1.5

0.7

0.7

ELECTRIC kW

—

19/25

HEAT

FLA

—

52/ 60

38/50 104/120

56/75† 156/180

—

25

50

75

—

25

48

78

—

30

60

90

—

24

46

75

Hp

7.5

10.0

30.8/28.0

7.5

24.2/22.0

10.0

30.8/28.0

7.5

10.0

30.8/28.0

7.5

24.2/22.0

10.0

30.8/28.0

7.5

10.0

7.5

10.0

7.5

10.0

7.5

10.0

7.5

10.0

7.5

10.0

7.5

10.0

7.5

10.0

IFM

FLA

24.2/22.0

24.2/22.0

11.0

14.0

11.0

14.0

11.0

14.0

11.0

14.0

9.0

11.0

9.0

11.0

9.0

11.0

9.0

11.0

POWER

EXHAUST

POWER

SUPPLY

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

Qty Hp

FLA

(ea)

MCA

— — — 144/142

2 1.0

5.9

156/154

— — — 151/148

2 1.0

5.9

163/160

— — — 144/142

2 1.0

5.9

156/154

— — — 151/148

2 1.0

5.9

163/160

— — — 167/154

2 1.0

5.9

181/169

— — — 175/161

2 1.0

5.9

190/176

MOCP*

— — — 144/142† 175/175†

2 1.0

5.9

156/154† 200/200†

— — — 151/148† 175/175†

2 1.0

5.9

163/160† 200/200†

— — — 62 80

2 1.0

3.1

— — —

69

65

80

80

2 1.0

3.1

— — —

2 1.0

3.1

— — —

2 1.0

3.1

72

62

69

65

72

90

80

80

80

90

175/175

200/200

175/175

200/200

175/175

200/200

175/175

200/200

175/175

200/200

175/175

200/200

52

58

54

60

73

80

75

83

90

98

93

100

78

85

81

89

108

115

111

119

52

58

54

60

60

70

60

70

80

90

80

90

100

100

100

110

80

90

90

100

125

125

125

125

60

70

60

70

DISCONNECT

SIZE

FLA

60

60

60

70

70

80

70

80

100

110

100

110

90

90

90

100

125

125

125

150

60

60

60

70

150/150†

175/175†

175/175†

175/175†

70

70

70

80

70

70

70

80

150/150

175/175

175/175

175/175

150/150

175/175

175/175

175/175

150/175

175/200

175/175

175/200

ELECTRIC HEAT BRANCH CIRCUIT FOR 208/240-V 75-kW ELECTRIC HEAT

UNIT

SIZE

50HG

NOMINAL

VOLTAGE

(3 Ph, 60 Hz)

028

208/240

VOLTAGE

RANGE

No. 1

COMPRESSOR

No. 2 No. 3

OFM

ELECTRIC

HEAT

IFM

POWER

EXHAUST

POWER

SUPPLY

Min

187

Max

253

RLA

NA

LRA

NA

RLA

NA

LRA

NA

RLA

NA

LRA Qty Hp

FLA

(ea) kW FLA Hp FLA Qty Hp

FLA

(ea)

MCA MOCP*

NA NA NA NA 56/75 156/180 NA NA NA NA NA 156/180 175/200

DISCONNECT

SIZE

FLA

200/225

FEEDER CIRCUIT FOR 208/230-V UNIT WITH 75-kW ELECTRIC HEAT

UNIT

SIZE

50HG

028

NOMINAL

VOLTAGE

(3 Ph, 60 Hz)

208/230

VOLTAGE

RANGE

Min

187

Max

253

No. 1

RLA

47.1

LRA

245.0

COMPRESSOR

No. 2

RLA

47.1

LRA

245.0

RLA

—

No. 3

LRA Qty Hp

— 6.0

OFM

1 /

4

FLA

(ea)

ELECTRIC kW

HEAT

FLA

1.5

56/75 156/180

Hp

IFM

FLA

7.5

24.2/22.0

10.0

30.8/28.0

POWER

EXHAUST

POWER

SUPPLY

Qty Hp

FLA

(ea)

MCA MOCP*

— 193/214 200/225 — —

2 1.0

5.9

207/229 225/250

— — — 201/221 225/225

2 1.0

5.9

216/236 225/250

See Legend and Notes on page 10.

DISCONNECT

SIZE

FLA

225/250

225/250

225/250

250/300

19

LEGEND

EQUIP —

Equipment

GND —

Ground

NEC —

National Electrical Code

TB —

Terminal Board

NOTE: The maximum wire size for TB1 is 2/0.

Fig. 12 — Field Power Wiring Connections

THERMOSTAT ASSEMBLY

REMOVABLE JUMPER

RH RC Y1 Y2 W1 W2 G C

L

X

TB4

R

1

Y1

2

Y2

3

W1

4

W2

5

G

6

C

7

X

8

Fig. 13 — Field Control Thermostat Wiring

T-55 SPT

T1 T2 TH

T-56 SPT

COM SN

TB3 7 8 9

SPT —

Space Temperature Sensor

Fig. 14 — Field Control Space

Temperature Sensor Wiring

Set heat anticipator settings as shown in Table 3.

UNIT SIZE

50HG

014

016-028

Table 3 — Heat Anticipator Settings

ELECTRIC

HEAT (kW)

15

25

50

25

50

75

STAGE 1

(W1) ON

Voltage

STAGES 1 AND 2

(W1 and W2) ON

Voltage

208/240 480 600 208/240 480 600

0.2

0.2

0.2

0.2

0.2

0.2

0.2

0.2

0.2

0.4

0.4

0.4

0.4

0.2

0.4

0.4

0.2

0.2

0.2

0.2

0.2

0.2

0.2

0.2

0.8

0.4

0.8

0.8

0.4

0.4

0.4

0.4

0.4

0.4

0.4

0.4

Settings may be changed slightly to provide a greater degree of comfort for a particular installation.

Step 8 — Install Outdoor Air Hood —

Perform the following procedure to install the outdoor-air hood:

1. Remove blank panel from return end of unit (hood section). Save the screws. See Fig. 15 for shipping location of components.

2. Hood sides are fastened to sides of outdoor air opening.

Remove the hood sides and save the screws (3 each side).

20

3. Remove the bracket holding the bottom half of the hood in the shipping position. Remove the hood bottom half and filters (or manual dampers on units so equipped) from outdoor section.

NOTE: On units without economizers, the components are attached to the unit basepan. To access the components, remove the panel below the outdoor air intake section.

4. Remove inner filter track from shipping position in outdoor section. Position inner filter track so the track is facing outward from the unit. Install the filter track with

4 screws provided.

5. Apply seal strip (provided) to back flange of both hood sides where hood side connects to the unit back panel.

See Fig. 16.

6. Apply seal strip (provided) to top flange of both hood sides where hood sides connect to the hood top panels.

See Fig. 16.

7. Install hood sides to the back panels using the screws from

Step 2. The sloped flanges point outward. The drip edges of the side panels should face outward as well. The filter guides should face inward to hold the filters in place. See

Fig. 16.

8. Apply seal strip along the entire length of the bottom flange of the hood top. See Fig. 16.

9. Install the bottom part of the hood top using 4 screws provided. See Fig. 16.

10. Remove the packaging from filters (3) and install into the filter tracks. Slide the filters to the sides then place the last filter into the center of the filter track.

NOTE: For units with manual dampers, replace the end filters with the manual dampers. Install the filter in the center between the manual dampers.

11. Install the filter retainer track along the bottom edge of the outdoor air hood using 4 screws provided. See Fig. 16.

12. Install top section of the outdoor air hood using 9 screws provided. See Fig. 16. See Fig. 17 for a picture of the assembled outdoor air hood.

NOTE: For filter removal, remove the four screws holding the filter retainer. The filters can then be removed, cleaned, or replaced. Install the filters by reversing the procedure.

with manual dampers, the assembly process is similar to the outdoor air hood for units with economizers. There are two slide dampers shipped with the unit to allow for manual setting of the outside air volume. When assembling the hood, place one of the manual slide dampers in each of the end positions and the remaining filter in the center position. The manual dampers can then be moved to the appropriate position and then locked into place using the screws mounted in the adjustment slots. See

Fig. 18.

HOOD

SIDE

HOOD TOP

(BOTTOM HALF)

HOOD TOP

(TOP HALF)

HOOD

SIDE

RETURN AIR

SECTION

Fig. 15 — Outdoor-Air Hood Compartment

Shipping Location

SEAL

STRIP

LOCATION

BOTTOM

HOOD

SECTION

TOP HOOD

SECTION

HOOD

SIDE

ADD

SEAL

STRIP

ADD

SEAL

STRIP

INNER

FILTER

TRACK

ADD

SEAL

STRIP

ADD

SEAL

STRIP

FILTER

GUIDE

FILTER

RETAINER

MANUAL

DAMPER

(IF EQUIPPED)

FILTER

NOTE: Units with manual damper only use one filter.

Fig. 16 — Outdoor Air Hood Details

FILTER

GUIDE

HOOD

SIDE

UNIT

BACK

PANEL

Fig. 17 — Outdoor Air Hood Assembled

LOCKING SCREW

MOVEABLE DAMPER

AIR FILTER POSITION MOVEABLE DAMPER

Fig. 18 — Manual Damper Details

21

Step 9 — Position Optional Power Exhaust or

Barometric Relief Damper Hood —

The optional power exhaust or barometric relief dampers are shipped assembled and tilted back into the unit for shipping. Brackets and extra screws are shipped in shrink wrap around the dampers.

1. Remove 9 screws holding each damper assembly in place. See Fig. 19. Each damper assembly is secured with

3 screws on each side and 3 screws along the bottom.

Save screws.

Be careful when tilting blower assembly. Hoods and blowers are heavy and can cause injury if dropped.

2. Pivot the damper assembly outward until top edge of damper assembly rests against inside wall of unit.

3. Secure each damper assembly to unit with 6 screws across top (3 screws provided) and bottom (3 screws from Step 1) of damper.

4. With screws saved from Step 1, install brackets on each side of damper assembly. See Fig. 20.

5. Remove tape from damper blades.

Step 10 — Non-Fused Disconnect —

The handle for the factory-installed non-fused disconnect is shipped inside the unit to prevent the handle from damage during shipping.

Follow these steps to complete installation of the handle.

BE SURE POWER IS SHUT OFF TO THE UNIT FROM

THE BUILDING POWER SUPPLY.

1. Open the control box access door.

2. Remove the small cover plate located on the unit corner post near the control section.

3. Remove the inner control box cover. The handle and shaft are located in a plastic bag at the bottom of the control box.

4. Insert the square shaft into the disconnect with the pins vertical. On the 100 amp disconnect the shaft is keyed into the disconnect and can only be installed one way with the pins vertical.

5. Insert the handle through the corner post and onto the shaft with the handle positioned so that “OFF” is on top.

6. Rotate the handle to the “ON” position to lock the pins into the handle.

7. From the inside of the corner post, attach the handle mounting screws to the handle. Slide the shaft fully into the handle and tighten the set screws(s) on the disconnect to lock the shaft. Tighten the screws that attach the handle to the corner post.

8. Rotate the handle back to the “OFF” position.

9. Replace all panels and doors.

10. Restore power to unit.

Fig. 19 — Power Exhaust or Barometric Relief Damper Mounting Details

22

Fig. 20 — Bracket and Hood Positioning

Step 11 — Install All Accessories —

After all of the factory-installed options have been adjusted, install all field-installed accessories. Refer to the accessory installation instructions included with each accessory. Consult the Carrier

Price Pages for accessory package numbers for particular applications. The available field-installed accessories for the

Centurion units are:

• economizer

• power exhaust

• barometric relief damper

• 14-in. roof curb

• 24-in. roof curb

• electric heaters

• enthalpy control

• differential enthalpy control

• plugged filter indicator

• carbon dioxide detector

• smoke detector

• filter status switch

• fan status switch

• condenser hail guard

• horizontal duct accessory

• thermostats

• two-position damper

23

Copyright 2003 Carrier Corporation

Book 1

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

4 PC 111 Catalog No. 535-00092 Printed in U.S.A.

Form 50HG-7SI Pg 24 11-03 Replaces: 50HG-3SI

Tab 1b 6b